# AP Physics C: Mechanics : Momentum and Impulse

## Example Questions

### Example Question #1 : Momentum And Impulse

A baseball player hits a  baseball initially moving at , returning it at a speed of  along the same path. If the ball was in contact with the bat for , what magnitude of force did the ball experience during the moment of contact?

Explanation:

Relevant equations:

Evaluate the impulse based on the mass and change of velocity.

Use the total impulse and time in the second equation.

Solve for the average force.

### Example Question #141 : Mechanics Exam

Which of the following could be used as units of impulse?

Explanation:

Relevant equations:

Impulse is defined as change in momentum, so has the same units as momentum. These units can easily be found using the given equations.

### Example Question #1 : Momentum And Impulse

A pitcher throws a 0.15kg baseball at  towards the batter and the batter hits the ball with his bat. The ball leaves the bat in the opposite direction at a speed of . Calculate the impulse experienced by the baseball.